Publications

We report recent advances in multimode-and coupled-core fiber amplifiers for SDM. The amplifiers gain goes up to 20dB, operating at low mode-dependent-loss.

We discuss two Er-doped fiber amplifier designs based on multimode and coupled-core structures.

New, compact multimode interference couplers with tunable power splitting ratios have been realised. Experiments show large tuning ranges.

This memorandum estimates the amount of interference generated in the horn-reflector antenna system due to higher order mode echoes during multipath fading.

Conventional optical fibers consist of a high-index core surrounded by a cladding of lower index.

Twisted ring counters of various types have been used for many years, and have been described in many publications. 1-5 They are designed for creating a well-defined periodic pulse pattern.

Population codes in the brain have generally been characterized by recording responses from one neuron at a time.

The phase transitions of poly[bis(4-ethylphenoxy)phosphazene] have been studied by solid state sup 31 P and sup 13 C NMR for the first time.

We first propose four-layer optimization for a UMTS coverage area: (i) cell-oriented intra-SGSN (serving GPRS service node) layer, which is optimized RAs (routing areas) covering the intra-SGSN sig

In this paper, we investigate the problem of dynamic subchannel assignments in the downlink of OFDM (Orthogonal Frequency Division Multiplexing) systems.